[time-nuts] 1pps signal measurement

[Mark Spencer]

Hi:

After a long break I am spending a bit of time looking at my time nuts gear.  I have started looking at the properties of the various 1 pps signals I have access to.  

Other than routing the signals via Coaxial cable into instruments with a high impedance input (the documentation for some my signal sources caution against terminating the outputs with 50 ohms) setting the trigger point to trigger on the appropriate part of the wave form (typically the leading edge of the pulse) are there any "best practices" I should be aware of ?

I am also wondering a bit about the possible impact of my 5370B's having a maximum trigger setting of approx 2.18 volts vis a vis the typical specs for 5 volt TTL signals that typically define a logic 1 as having a slightly higher voltage ?  Would enabling the 10:1 attenuator on the input to the 5370B make sense ?

Any comments would be appreciated.

Thanks 
Mark S